public Arithmetic(ECondition condition, EOpcode opcode, bool setConditionFlags, ERegister rn, ERegister rd, byte rotate, byte immediate)
{
Operand2 = EOperand2.RotateImmediate;
Condition = condition;
Opcode = opcode;
SetConditionFlags = setConditionFlags;
Rn = rn;
Rd = rd;
Rotate = rotate;
Immediate = immediate;
Decoded = true;
}
public Arithmetic(ECondition condition, EOpcode opcode, bool setConditionFlags, ERegister rn, ERegister rd, ERegister rs, EShiftInstruction shiftInst, ERegister rm)
{
Operand2 = EOperand2.RsShiftRm;
Condition = condition;
Opcode = opcode;
SetConditionFlags = setConditionFlags;
Rn = rn;
Rd = rd;
Rs = rs;
ShiftInst = shiftInst;
Rm = rm;
Decoded = true;
}
public Arithmetic(ECondition condition, EOpcode opcode, bool setConditionFlags, ERegister rn, ERegister rd, byte shiftCount, EShiftInstruction shiftInst, ERegister rm)
{
Operand2 = EOperand2.ImmediateShiftRm;
Condition = condition;
Opcode = opcode;
SetConditionFlags = setConditionFlags;
Rn = rn;
Rd = rd;
ShiftCount = shiftCount;
ShiftInst = shiftInst;
Rm = rm;
Decoded = true;
}
public void Parse([NotNull] string parameterString)
{
if (Decoded)
{
throw new InvalidOperationException();
}
var parameters = Parser.ParseParameters(parameterString, new[] { ',' });
switch (Opcode)
{
case EOpcode.Add:
case EOpcode.Sub:
case EOpcode.Rsb:
case EOpcode.And:
case EOpcode.Eor:
case EOpcode.Orr:
case EOpcode.Bic:
if ((parameters.Length != 3) && (parameters.Length != 4))
{
throw new TargetParameterCountException();
}
// Parse Rd, Rn
Rd = Parser.ParseRegister(parameters[0]);
Rn = Parser.ParseRegister(parameters[1]);
Operand2 = ParseOperand2(parameters[2], parameters.Length == 4 ? parameters[3] : null);
break;
case EOpcode.Mov:
case EOpcode.Mvn:
// Check for valid parameter count
if ((parameters.Length != 2) && (parameters.Length != 3))
{
throw new TargetParameterCountException();
}
// Parse Rd
Rd = Parser.ParseRegister(parameters[0]);
Operand2 = ParseOperand2(parameters[1], parameters.Length == 3 ? parameters[2] : null);
break;
case EOpcode.Tst:
case EOpcode.Teq:
case EOpcode.Cmp:
case EOpcode.Cmn:
// Check for valid parameter count
if ((parameters.Length != 2) && (parameters.Length != 3))
{
throw new TargetParameterCountException();
}
// Parse Rn
Rn = Parser.ParseRegister(parameters[0]);
Operand2 = ParseOperand2(parameters[1], parameters.Length == 3 ? parameters[2] : null);
break;
}
Decoded = true;
}
